01Platforms2025—2026
CS Community / CS Hub
A secure platform for multiple communities, bringing together members, knowledge, forums, events and approval workflows.
Nelson Guerreiro · QuarkUp Studio
From business needs to a finished product.
Built around your business.
Bespoke brand websites, applications and business tools. I work with you from our first conversation through to launch, with equal care for design and engineering.
Independent since 2023French RNCP qualification · level 6France · Portugal · Remote
Selected projects
Different challenges. The same attention to detail.
01
02Products2023—2026
Cashetizer
A mobile marketplace for renting items between individuals, combining location-based search, identity checks, payments and operational support.
03Brands2025—2026
Manos Lince
A multilingual ecosystem for a Portuguese olive oil brand: premium website, catalogue without public prices, customer area and business administration.
04Platforms2025—2026
RiffSide
A platform to organise the band, practise songs and prepare concerts: repertoire, setlists, audio, scores, MIDI, chat and audience participation.
How I can help
The whole picture. A tailored solution.
Websites & e-commerce
A distinctive online presence, a clear customer journey and content you can manage.
Applications & SaaS
Web and mobile products shaped around your users, data and workflows.
Business tools & back offices
Centralise operations, simplify everyday work and connect your tools in one coherent interface.
Maintenance & improvements
Keep the product moving after launch through fixes, optimisation and new features.
A clear way of working
You know where we’re going. And why.
Understand
Your goals, users and constraints set the starting point.
Design
Agree on the user journeys and visual direction before development begins.
Build
Regular releases let you see progress and refine priorities.
Support
Launch, handover, maintenance and improvements as your needs evolve.
The developer behind the studio
Technical skills. Real-world perspective.
My background combines web and mobile development, operations management and years of hands-on IT experience. It helps me build tools that serve the people who use them.
Your direct contact
Your next project starts with a conversation.
An idea to bring to life, a website to rethink or a tool to improve? Let’s discuss what you need.
Tell me about your project